Introduction
Understanding how to use quem is essential for asking and answering questions in Brazilian Portuguese. This short guide explains when quem acts as a subject or an object, how word order changes, common verbs and prepositions that pair with it, and useful cultural notes to help you sound natural.
- What is quem?
- Using quem as the subject
- Using quem as a direct object
- Using quem as an indirect object
- Using quem with prepositions
- Pronoun placement and clitics with quem
- Special cases and exceptions
- Politeness and formality when asking who
- Cultural and usage notes
- Quick reference summary
- Resources and next steps
- Conclusion
What is quem?
Quem is the Portuguese interrogative pronoun equivalent to who in English. It can function as a subject, a direct object, an indirect object, or an object of a preposition. Depending on its role, the sentence structure and the verb agreement can change. Recognizing these roles helps you form correct questions and interpret answers.
Subject vs. Object: the basic distinction
When quem is the subject, it performs the action of the verb. When quem is the object, it receives the action or is linked to a verb via a preposition. In English, subject and object forms both use who, but Portuguese requires attention to verb agreement and, occasionally, the use of prepositions like para or de.
Using quem as the subject
When quem is the subject, the verb agrees with a third-person singular form, since the question treats the unknown person as a singular subject. Word order often places quem at the beginning of the sentence. The verb remains in the third-person singular regardless of the possible answer being first or third person.
Examples of subject questions
Here are typical subject questions where quem does the action.
Quem veio ontem?
Quem ligou para você?
Quem escreveu esta carta?
Notice that the verbs veio, ligou, and escreveu are in third-person singular even if the actual person might be eu, você, or eles in the answer.
How to answer subject questions
Answers to subject questions will provide the actual subject and require verb agreement with that subject. If the answer is eu, the verb must be conjugated accordingly; if the answer is eles, use the plural form.
Example question: Quem veio?
Possible answers:
Eu vim ontem.
Maria e João vieram ontem.
Notice how the verb changes from veio (question) to vim or vieram (answers).
Using quem as a direct object
When quem is the direct object, it receives the action of the verb. Portuguese often keeps subject-verb-object order, but in questions quem usually appears at the start. Verbs remain in third-person singular because quem is an unspecified object in the question.
Examples of direct-object questions
Quem você viu?
Quem ela chamou?
Quem encontrou o documento?
In these examples, viu, chamou, encontrou are third-person singular verbs matching the impersonal question form. Answers will change the verb form and introduce the actual object as the subject of an answer sentence or remain as the object if the structure requires it.
Answering direct-object questions
Example question: Quem você viu?
Possible answers:
Eu vi o João.
Eu vi eles no parque.
When the answer uses a pronoun like eles, the verb must agree with the subject of the answer sentence (eu vi eles). In casual speech, you might also hear eu os vi in more formal registers, using clitic pronouns.
Using quem as an indirect object
As an indirect object, quem is typically followed by a preposition such as para, a, or com, depending on the verb. In questions, Portuguese often places quem at the beginning, and the verb remains in third-person singular.
Common verbs and prepositions
Verbs that commonly take an indirect object include dar, mandar, dizer, perguntar, falar, and oferecer. The preposition depends on the verb and the meaning:
dar algo para alguém — Para quem você deu o presente?
dizer algo a alguém — A quem você disse a notícia?
perguntar a alguém — A quem você perguntou?
Note that Portuguese sometimes places the preposition before quem (A quem, Para quem) to indicate the indirect object clearly.
Examples and answers
Question: Para quem você comprou o presente?
Answer: Eu comprei para minha irmã.
Question: A quem você pediu ajuda?
Answer: Eu pedi ajuda ao meu colega.
Using the preposition with quem helps prevent ambiguity and follows natural Portuguese patterns.
Using quem with prepositions
Prepositions are often required when the verb or context demands them. When you add a preposition, quem usually becomes A quem, Para quem, De quem, Com quem, depending on the relationship between the verb and its object.
Examples with common prepositions
Com quem você vai ao cinema?
De quem é este livro?
Por quem você está esperando?
These prepositional forms are essential for clarity. Portuguese frequently uses the preposition before quem in formal written language and in spoken language when the verb requires it.
Pronoun placement and clitics with quem
Portuguese uses unstressed object pronouns (clitics) like me, te, o, a, lhe, nos, and lhes. When you form questions with quem, you may encounter clitic pronouns in answers rather than in the question itself. European Portuguese and Brazilian Portuguese differ slightly in clitic placement, but in Brazilian Portuguese, clitics usually follow the verb in spoken and informal styles.
Example showing clitics in answers
Question: Quem te ajudou?
Answer: Minha amiga me ajudou.
Question: Quem você viu?
Answer: Eu o vi ontem. (more formal)
Eu vi ele ontem. (colloquial)
Keep in mind that in everyday Brazilian Portuguese, people commonly use subject pronouns and full pronouns rather than clitics, especially in spoken conversation.
Special cases and exceptions
There are a few patterns to watch for that can cause confusion for learners.
1. Quem with verbs of existence
When asking about who exists or who is present, verbs like haver and existir appear. In informal spoken Brazilian Portuguese, people may use quem as if it were the subject and still use third-person singular verbs.
Quem há? sounds unnatural; instead, people say Quem está aqui? or Quem veio?
2. Quem and passive constructions
Passive voice changes how objects and subjects appear. If a passive construction hides the agent, you might ask by who the action was done using por quem.
O relatório foi escrito por quem?
Using por quem makes it clear you are asking for the agent in a passive sentence.
3. Multiple people and plural answers
Even though the question uses third-person singular verb forms, answers can be plural and require verb agreement. Always change the verb to match the real subject in the answer.
Question: Quem participou da reunião?
Answer: João e Maria participaram da reunião.
Politeness and formality when asking who
In formal contexts, Brazilians often use A quem or Por favor, com quem posso falar? to sound polite. In informal settings, a simple Quem é? or Quem falou? is fine. When addressing elders, strangers, or in customer service, add por favor and use more complete sentences to show respect.
Examples showing tone
Informal: Quem vai?
Polite/formal: Com quem posso falar, por favor?
Neutral: A quem devo entregar este documento?
Cultural and usage notes
Brazilian Portuguese often prefers direct, clear questions in everyday speech. In group settings, people may add context to quem questions to avoid ambiguity. For example, instead of simply asking Quem trouxe o bolo?, someone might say Quem trouxe o bolo da cozinha? to specify which cake they mean. Also, Brazilian speakers use intonation and context heavily; native listeners can infer whether quem is subject or object from the verb and sentence context without extra markers.
Common conversational patterns
People often follow a quem question with immediate clarifying questions or short follow-ups to get details about time, place, or relationships. This is especially true in friendly conversations or when arranging plans.
Ex: Quem vai ao show?
Você vai com quem?
Quem mais está vindo?
Quick reference summary
– Quem at the beginning of the sentence can be subject, direct object, indirect object, or object of a preposition.
– Use third-person singular verbs in questions with quem because the pronoun is unspecified in the question.
– Introduce prepositions like a, para, de, com, por before quem when the verb requires them (A quem, Para quem, De quem, Com quem, Por quem).
– Answers will change the verb to match the actual subject or object and may use full pronouns instead of clitics in colloquial Brazilian Portuguese.
– Use polite forms A quem or com quem posso falar and por favor in formal contexts.
Resources and next steps
To master quem, read dialogues and listen to Brazilian Portuguese speech to hear natural intonation and preposition use. Pay attention to verb agreement in answers and practice transforming questions into declarative answers to internalize changes in verb forms and pronoun usage.
Conclusion
Quem is a versatile interrogative pronoun used to ask who as subject or object. Remember to use third-person singular verbs in questions, add prepositions when the verb requires them, and change verb agreement in answers. With exposure to real Brazilian Portuguese speech and practice forming both questions and answers, you will use quem naturally and accurately.
